DataMapper

class ginga.canvas.coordmap.DataMapper(viewer)[source]

Bases: ginga.canvas.coordmap.BaseMapper

A coordinate mapper that maps to the viewer in data coordinates.

Methods Summary

data_to(data_pts[, viewer])
offset_pt(pts, offset) Offset a point specified by pt, by the offsets offset.
rotate_pt(pts, theta, offset) Rotate a point specified by pt by the angle theta (in degrees) around the point indicated by offset.
to_data(data_pts[, viewer])

Methods Documentation

data_to(data_pts, viewer=None)[source]
offset_pt(pts, offset)[source]

Offset a point specified by pt, by the offsets offset. Coordinates are assumed to be in the space defined by this mapper.

rotate_pt(pts, theta, offset)[source]

Rotate a point specified by pt by the angle theta (in degrees) around the point indicated by offset. Coordinates are assumed to be in the space defined by this mapper.

to_data(data_pts, viewer=None)[source]